I don't know if it would be considered controversial, but:
I had a habit of going over the time allotted on my talks. Personally, I think that the 5 minute bible reading is far too short to say anything significant. I always had a lot of material I wanted to cover in so little time. I didn't want to give the same boring ass talks I heard everyone else give, so I always did a lot of research so that I would have something meaningful to say.
Anyway, this was one time when, I must admit, I didn't really prepare. So before I could even finish my talk, the bell rang. So I pause for a moment, look out into the audience, and say (half-joking):
"You know on C-SPAN, there have a provision for those who use up all there time. Whenever a speaker uses all his time, he can request to a few more moments or to borrow time from another speaker. I really wish they had that provision for the Theocratic Ministry School."
To my surprise, people started laughing, I mean really laughing. Some people even started to applaud. I didn't really think about it that much until Sunday when the School overseer called me aside. He said that although he had no problem with my comment, he had received some complaints from others in the congregation. He said that some were offended that I would use the platform to talk about American government, or something like that. I guess they thought I was breaking God's laws of neutrality. I guess the offended were in the minority, though. Most people said they really enjoyed the talk.